F - Mech Eng,Light,Heat,Weapons – 02 – D
Patent
F - Mech Eng,Light,Heat,Weapons
02
D
F02D 41/22 (2006.01) F02B 77/08 (2006.01) F02D 17/04 (2006.01) F02B 3/06 (2006.01)
Patent
CA 2073662
56,752 ABSTRACT OF THE DISCLOSURE Methods and apparatus for detecting fuel problems of an internal combustion engine, including low fuel, a plugged fuel filter, a pinched fuel line, air in the fuel system, and gelled fuel. The detection of a fuel system problem is followed by engine shutdown, with shutdown being initiated quickly enough to retain sufficient fuel in the fuel system to re-start the engine without the necessity of priming. The invention includes the detection and counting of predetermined engine speed fluctuations. A timer is started upon the detection of the first predetermined speed fluctuation. If a predetermined count is reached before the timer reaches a predetermined time value, the engine is shutdown when the count is reached. If the timer reaches the time value before the count value is reached, the counter and timer are reset to await another predetermined engine speed fluctuation.
Hanson Jay Lowell
Herrig Doyle Glenn
Bereskin & Parr
Thermo King Corporation
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